CN217756670U

CN217756670U - Closed type top pulley device

Info

Publication number: CN217756670U
Application number: CN202221367992.8U
Authority: CN
Inventors: 韩成才; 张文敏; 石万涛; 雷宽成
Original assignee: Xian Shiyou University
Current assignee: Xian Shiyou University
Priority date: 2022-06-02
Filing date: 2022-06-02
Publication date: 2022-11-08
Anticipated expiration: 2032-06-02

Abstract

A closed type top pulley device comprises a pulley and a pulley cover on the outer side of the pulley, wherein the center of the pulley is connected with the pulley cover through a pulley shaft, two ends of the pulley shaft are fixed on the outer side of the pulley cover through end covers, a bearing assembly is arranged at the center of the pulley and on the periphery of the pulley shaft, a plurality of anti-bouncing wheels are arranged on the periphery of the pulley and between the front wall and the rear wall of the upper part of the pulley cover, and the anti-bouncing wheels are matched with a steel cable groove on the pulley; collect the sealed fat that will scatter through the pulley cover outside the pulley in the pulley cover, then discharge from the oil-out of pulley cover below, can effectively avoid the steel cable to cause the pollution of environment in splashing of the process fluid that rises, the utility model has the advantages of rational in infrastructure, the operation is stable not the rope skipping and practical efficient.

Description

Closed type top pulley device

Technical Field

The utility model relates to a pulley gear, concretely relates to airtight type sky pulley gear.

Background

With the continuous maturity of oil logging technology, the technology of steel cable liquid drainage and gas production has been applied to various oil testing sites. In the oil extraction construction process, the well head high pressure operation, well head blowout preventer cable blowout preventer need inject into sealing grease and seal, because the steel cable can attach some sealing grease when preventing the box-packed putting through the cable, when the steel cable passes through the pulley, along with the operation of pulley, the phenomenon that the sealing grease can appear scattering, scattering easily causes the pollution of environment. How to prevent the splash of sealing grease from causing environmental pollution is particularly important, when the steel cable passes through the pulley, because of factors such as pressure, the sealing grease attached to the steel cable overflows from the gap more easily, and scatters to the ground in the running process of the pulley to cause environmental pollution. At present, a layer of plastic film is laid below a pulley device to prevent the sealing grease from splashing in an oil extraction test field, and when the sealing grease cannot be collected by the plastic film in windy and rainy weather, the environment can still be polluted. Chinese patent CN205151628U discloses a swabbing top sheave, which integrates a force sensor on the sheave support shaft, measures the tension of a steel wire rope by the force applied to the support shaft, and the top sheave is provided with an integral casing for blocking dirt entering the top sheave and guiding the dirt into a sewage tank through a sewage outlet at the bottom of the casing. The structure has the function of measuring the tension of the steel wire rope, can also obstruct the floating of dirt, but lacks an effective means for the condition of rope skipping in the operation process, has insufficient sealing performance, and is easy to leak and overflow from the inlet and the outlet of the steel wire rope and the interface of the device under the condition of high-pressure operation.

SUMMERY OF THE UTILITY MODEL

In order to overcome the shortcoming of the prior art, the utility model aims to provide an airtight day pulley gear collects the sealed fat that will scatter in the cover through the outer pulley cover of pulley, then discharges from the oil-out of cover below, can effectively avoid splashing of steel cable at the process fluid that rises, causes the pollution of environment, the utility model has the advantages of rational in infrastructure, the operation is stable not rope skipping and practical efficient.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an airtight type day pulley gear, includes pulley 4 and pulley cover 1 in the pulley 4 outside, 4 centers of pulley are connected through pulley shaft 17 with pulley cover 1, and pulley shaft 17 both ends are fixed in the pulley cover 1 outside through

end cover

5, and 4 centers of pulley and pulley shaft 17 periphery are equipped with the bearing assembly, are equipped with a plurality of anti-bouncing wheels 2 between the preceding rear wall on 4 peripheries of pulley and 1 upper portion of pulley cover, and anti-bouncing wheels 2 and the cable groove 12 looks adaptation on the pulley 4.

The bearing assembly comprises a first deep groove ball bearing 15 and a second deep groove ball bearing 6 which are sleeved on a pulley shaft 17 in a relative manner, a first shaft sleeve 19 and a second shaft sleeve 20 are respectively arranged between the first deep groove ball bearing 15 and the second deep groove ball bearing 6, a gap 7 is arranged between the first shaft sleeve 19 and the second shaft sleeve 20, the inner diameter of the first shaft sleeve 19 is consistent with the inner diameter of the first deep groove ball bearing 15 and the inner diameter of the second deep groove ball bearing 6, and the outer diameter of the second shaft sleeve 20 is consistent with the outer diameter of the first deep groove ball bearing 15 and the outer diameter of the second deep groove ball bearing 6; the outer side of the first deep groove ball bearing 15 is in contact connection with a step 16 on a pulley shaft 17, and the outer side of the second deep groove ball bearing 6 is connected with a side plate 14 through a gland 11 and a third shaft sleeve 10 on the pulley shaft 17.

The outer rings of the first deep groove ball bearing 15 and the second deep groove ball bearing 6 rotate, and the inner rings do not rotate.

The middle of the pulley shaft 17 is radially provided with a crossed through hole 9, the crossed part of the through hole 9 is communicated with an oil nozzle 18 at the top end of the pulley shaft 17 along the axial direction of the pulley shaft 17, and an opening 24 of the through hole 9 at the periphery of the pulley shaft 17 is communicated with an oil passing hole 23 arranged on the first shaft sleeve 19.

The pulley cover 1 comprises an upper cover 4-1 and a lower cover 4-2, the upper cover 4-1 is in butt joint with the lower cover 4-2 through bolts, an oil outlet 13 is formed in the bottom end of the lower cover 4-2, and the bottom of the pulley cover 1 is supported and fixed by a base 4-3.

The inner wall of the pulley cover 1 is closely provided with a side plate 14.

The pulley cover 1 is provided with an inlet 21 and an outlet 22 of a steel cable on two sides of the lower part, and the steel cable enters the pulley cover 1 from the inlet 21, goes around the steel cable groove 12 on the pulley 4 and passes out from the outlet 22 on the other side.

The inlet 21 of the cable is vertical and the outlet 22 forms an angle of inclination with the horizontal.

A pressing cover 25 is arranged at the outlet 22 of the steel cable, and a Y-shaped ring 26 for sealing a groove is arranged in the pressing cover 25.

And an oil seal 8 is sleeved on the inner side of the end cover 5 and the pulley shaft 17.

The beneficial effects of the utility model reside in that:

this device mainly used solves the steel cable and passes through pulley 4, under the factor of pressure, prevent that the sealed fat that the steel cable took out from sealing device from splashing scattering the polluted environment, pulley cover 1 is outside pulley 4, sealed fat through the pulley splash falls into pulley cover 1 in, it has oil-out 13 to open in lower cover 4-2 bottom, the sealed fat of splash takes over the pipeline at oil-out 13 and flows, a plurality of jump wheels 2 of preventing of pulley top installation, prevent the in-process rope skipping that the steel cable rose, first deep groove ball bearing 15 and second deep groove ball bearing 6 bear the load and provide the rotational speed for pulley 4's rotation, the export 22 department of steel cable, the Y shape circle 26 for the sealed slot of gland 25 inside can prevent that a small amount of sealed fat from being taken out by the steel cable, the utility model discloses device simple structure is reasonable, and convenient to use has solved by the in-process that the steel cable moved on pulley 4, the sealed fat of splash scatters the polluted environment.

Drawings

Fig. 1 is a half sectional view of the general assembly drawing of the present invention.

Figure 2 is a front cross-sectional view of the general assembly drawing of the present invention.

Fig. 3 is a front view of the housing of the sealed type crown block of the present invention.

Fig. 4 is a partial sectional view of the first sleeve through hole of the sealed top sheave of the present invention.

Figure 5 is a partial cross-sectional view of the outlet 22 of the sealed crown block cable of the present invention.

In the figure: 1. a pulley cover; 2. the wheel is prevented from jumping; 3. a pin shaft; 4. a pulley; 4-1, covering; 4-2, covering the lower cover; 4-3. A base; 5. an end cap; 6. a second deep groove ball bearing; 7. a gap; 8. oil sealing; 9. a through hole; 10. a third shaft sleeve; 11. a gland; 12. a steel cable groove; 13. an oil outlet; 14. a side plate; 15. one side of the deep groove ball bearing is provided with a sealing ring; 16. a step; 17. a pulley shaft; 18. a grease nipple; 19. a first bushing; 20. a second shaft sleeve; 21. an inlet; 22. an outlet; 23. an oil passing port; 24. an opening; 25. a compression cover; 26. the sealing groove is a Y-shaped ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, the enclosed type crown block device comprises a pulley 4 and a pulley cover 1 outside the pulley 4, wherein the center of the pulley 4 is connected with the pulley cover 1 through a pulley shaft 17, two ends of the pulley shaft 17 are fixed outside the pulley cover 1 through end covers 5, a bearing assembly is arranged at the center of the pulley 4 and at the periphery of the pulley shaft 17, three anti-bouncing wheels 2 are equidistantly arranged between the periphery of the pulley 4 and the front and rear walls of the upper part of the pulley cover 1, and the anti-bouncing wheels 2 are matched with a steel cable groove 12 on the pulley 4.

The bearing assembly comprises a first deep groove ball bearing 15 and a second deep groove ball bearing 6 which are sleeved on a pulley shaft 17 in a relative mode, a first shaft sleeve 19 and a second shaft sleeve 20 are arranged between the first deep groove ball bearing 15 and the second deep groove ball bearing 6 respectively, a gap 7 is arranged between the first shaft sleeve 19 and the second shaft sleeve 20, the inner diameter of the first shaft sleeve 19 is consistent with the inner diameter of the first deep groove ball bearing 15 and the inner diameter of the second deep groove ball bearing 6, and the outer diameter of the second shaft sleeve 20 is consistent with the outer diameter of the first deep groove ball bearing 15 and the outer diameter of the second deep groove ball bearing 6; the outer side of the first deep groove ball bearing 15 is in contact connection with a step 16 on a pulley shaft 17, and the outer side of the second deep groove ball bearing 6 is connected with a side plate 14 through a gland 11 and a third shaft sleeve 10 on the pulley shaft 17.

The middle of the pulley shaft 17 is radially provided with a crossed through hole 9, the crossed part of the through hole 9 is communicated with an oil nozzle 18 at the top end of the pulley shaft 17 along the axial direction of the pulley shaft 17, and an opening 24 of the through hole 9 at the periphery of the pulley shaft 17 is communicated with an oil passing hole 23 arranged on a first shaft sleeve 19; so that the sealing grease can enter the gap 7 between the first sleeve 19 and the second sleeve 20 to lubricate the bearing.

Referring to fig. 3, the pulley cover 1 comprises an upper cover 4-1 and a lower cover 4-2, the upper cover 4-1 is in butt joint with the lower cover 4-2 through bolts, an oil outlet 13 is arranged at the bottom end of the lower cover 4-2, and the bottom of the pulley cover 1 is supported and fixed by a base 4-3.

The inner wall of the pulley cover 1 is tightly attached with a side plate 14, so that the loading capacity of the device in operation is improved.

Referring to fig. 3, the pulley cover 1 is provided with an inlet 21 and an outlet 22 for a cable on both sides of the lower portion, and the cable enters the pulley cover 1 from the inlet 21, passes through the cable groove 12 on the pulley 4, and exits from the outlet 22 on the other side.

The entrance 21 and the vertical exit 22 of the steel cable form an angle of inclination with the horizontal.

A pressing cover 25 is arranged at the position of an outlet 22 of the steel cable, and a Y-shaped ring 26 for a sealing groove is arranged in the pressing cover 25, so that a small amount of sealing grease is prevented from being brought out by the steel cable.

An oil seal 8 is sleeved on the inner side of the end cover 5 and the pulley shaft 17, so that oil leakage in the rotating process of the bearing is prevented.

The utility model discloses a theory of operation does:

the steel cable gets into from the import 21 of the lower extreme steel cable of pulley housing 1, walk around the steel cable groove 12 on the pulley 4, the wheel 2 of preventing jumping on pulley housing 1 upper portion cooperates with steel cable groove 12, prevent the steel cable rope skipping, the in-process of the ascending operation of steel cable, the rotation through first deep groove ball bearing 15 and second deep groove ball bearing 6 drives the motion of pulley 4, the steel cable is brought sealed fat into from the outside, under the effect of pressure, when pulley 4's operation, sealed fat splashes and remains inside pulley housing 1, prevent that sealed fat from splashing outside polluted environment, sealed fat flows out at the oil-out 13 of pulley housing 1 bottom, wherein oil blanket 8 prevents that sealed fat from permeating pulley housing 1 outside, the sealed slot of the export 22 department of steel cable prevents that a small amount of sealed fat of steel cable from taking out with Y shape circle 26.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a closed type day pulley gear, includes pulley (4) and pulley cover (1) in pulley (4) outside, its characterized in that: the pulley (4) center is connected with pulley cover (1) through pulley shaft (17), and pulley shaft (17) both ends are fixed in the pulley cover (1) outside through end cover (5), and pulley (4) center and pulley shaft (17) periphery are equipped with bearing assembly, are equipped with a plurality of jump-proof wheels (2) between the preceding back wall on pulley (4) periphery and pulley cover (1) upper portion, and the cable groove (12) looks adaptation on jump-proof wheel (2) and pulley (4).

2. The enclosed antenna pulley device according to claim 1, wherein: the bearing assembly comprises a first deep groove ball bearing (15) and a second deep groove ball bearing (6) which are sleeved on a pulley shaft (17) in a relative manner, a first shaft sleeve (19) and a second shaft sleeve (20) are arranged between the first deep groove ball bearing (15) and the second deep groove ball bearing (6) respectively, a gap (7) is arranged between the first shaft sleeve (19) and the second shaft sleeve (20), the inner diameter of the first shaft sleeve (19) is consistent with the inner diameter of the first deep groove ball bearing (15) and the inner diameter of the second deep groove ball bearing (6), and the outer diameter of the second shaft sleeve (20) is consistent with the outer diameter of the first deep groove ball bearing (15) and the outer diameter of the second deep groove ball bearing (6); the outer side of the first deep groove ball bearing (15) is in contact connection with a step (16) on a pulley shaft (17), and the outer side of the second deep groove ball bearing (6) is connected with a right side plate (14) through a gland (11) and a third shaft sleeve (10) on the pulley shaft (17).

3. The enclosed antenna pulley device according to claim 2, wherein: the outer rings of the first deep groove ball bearing (15) and the second deep groove ball bearing (6) rotate, and the inner rings do not rotate.

4. The enclosed type antenna pulley device according to claim 1 or 2, wherein: the middle of the pulley shaft (17) is radially provided with a crossed through hole (9), the crossed part of the through hole (9) is communicated with a grease nipple (18) at the top end of the pulley shaft (17) along the axial direction of the pulley shaft (17), and an opening (24) of the through hole (9) on the periphery of the pulley shaft (17) is communicated with a grease passing opening (23) arranged on the first shaft sleeve (19).

5. The enclosed type sky pulley device of claim 1, wherein: the pulley cover (1) comprises an upper cover (4-1) and a lower cover (4-2), the upper cover (4-1) and the lower cover (4-2) are in butt joint through bolts, an oil outlet (13) is formed in the bottom end of the lower cover (4-2), and the bottom of the pulley cover (1) is supported and fixed by a base (4-3).

6. The enclosed type sky pulley device of claim 1 or 5, wherein: the inner wall of the pulley cover (1) is tightly attached with a side plate (14).

7. The enclosed type antenna pulley device according to claim 1 or 5, wherein: and an inlet (21) and an outlet (22) of a steel cable are arranged on two sides of the lower part of the pulley cover (1), the steel cable enters the pulley cover (1) from the inlet (21), bypasses a steel cable groove (12) on the pulley (4), and penetrates out from the outlet (22) on the other side.

8. The enclosed antenna pulley device according to claim 7, wherein: the inlet (21) of the steel cable is vertical, and an inclined angle is formed between the outlet (22) and the horizontal plane.

9. The enclosed antenna pulley device according to claim 7, wherein: a pressing cover (25) is arranged at the outlet (22) of the steel cable, and a Y-shaped ring (26) for a sealing groove is placed in the pressing cover (25).

10. The enclosed antenna pulley device according to claim 1, wherein: and an oil seal (8) is sleeved on the inner side of the end cover (5) and the pulley shaft (17).